Articles | Volume 25, issue 18
https://doi.org/10.5194/acp-25-10987-2025
https://doi.org/10.5194/acp-25-10987-2025
Research article
 | 
23 Sep 2025
Research article |  | 23 Sep 2025

Aerosol hygroscopicity over the South-East Atlantic Ocean during the biomass burning season – Part 2: Influence of sea salt and burning conditions on CCN hygroscopicity

Haochi Che, Lu Zhang, Michal Segal-Rozenhaimer, Caroline Dang, Paquita Zuidema, and Arthur J. Sedlacek III

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Short summary
We studied aerosols over a remote island in the Atlantic Ocean to understand how they affect cloud formation. By analyzing data from two fire seasons, we found that changes in sea salt and smoke from fires strongly influenced how easily these particles form cloud droplets. In 2017, sea salt increased due to weather changes, making the particles more water-attracting. This helps us understand how natural and human activities impact clouds and climate.
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